VedKit

Zero-Knowledge AES-256 File Encryption Vault

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Comprehensive Guide

The Zero-Knowledge File Encryption Guide: AES-256-GCM, PBKDF2 & In-Browser Vault Security

Authenticated Galois/Counter Mode, 100k PBKDF2 SHA-256 Rounds, Zero-Server Memory Processing

Zero-Knowledge Client-Side Cryptography Architecture

Traditional cloud storage vaults require uploading unencrypted files to remote servers where encryption occurs server-side, meaning cloud providers retain the technical capability to decrypt files. VedKit executes Zero-Knowledge In-Browser Cryptography:

  1. 1Encryption keys are derived directly from your master passphrase using PBKDF2 with 100,000 rounds of SHA-256.
  2. 2The file binary is encrypted in RAM using native WebCrypto AES-256-GCM.
  3. 3Only the encrypted container (.vedvault) is downloaded to your device. No unencrypted bytes ever leave your hardware.

Why AES-256-GCM (Galois/Counter Mode) Is the Gold Standard

AES-GCM is an Authenticated Encryption with Associated Data (AEAD) cipher mode. Unlike legacy CBC or ECB modes:

  • It provides confidentiality through 256-bit symmetric block encryption.
  • It provides integrity & authenticity through a 128-bit GHASH authentication tag. Any tampering, bit-flipping, or file corruption causes decryption to abort with zero plaintext leak.

The .vedvault Binary Container Specification

VedKit containers pack authenticated headers into a single portable binary file:

  • Bytes 0-7: 8-byte magic header (VEDVAULT)
  • Byte 8: Container specification version (0x01)
  • Bytes 9-24: 16-byte cryptographically secure random salt for PBKDF2 key derivation
  • Bytes 25-36: 12-byte unique random Initialization Vector (IV/Nonce)
  • Bytes 37-40: 32-bit big-endian length of encrypted metadata
  • Trailing bytes: AES-GCM ciphertext containing original filename, MIME type, and binary payload.

Technical Architecture & Zero-Upload Guarantee

How Zero-Knowledge AES-256 File Encryption Vault processes files securely inside your device memory

Local RAM Isolation

Every byte of your file is loaded directly into browser ArrayBuffers. Data is processed in volatile sandbox memory and flushed immediately when you close or refresh this tab.

Hardware Acceleration

Calculations and image matrix transformations leverage client-side GPU / Canvas2D engines for zero-latency output without server queuing or rate limits.

Standards Compliance

Generated files strictly follow international ISO specifications (JPEG JFIF, PDF 1.7, Web Crypto API) to guarantee acceptance on all official portals and banking systems.

How to Use Zero-Knowledge AES-256 File Encryption Vault

Quick 4-step guide for instant results

4 Simple Steps
1 Step 01

Drop Any File to Encrypt

Upload any PDF, photo, archive, spreadsheet, or confidential document into the vault dropzone.

Zero Data Leaks
2 Step 02

Choose a Strong Master Passphrase

Enter a strong password or generate a high-entropy Diceware passphrase using the built-in generator.

Zero Data Leaks
3 Step 03

Encrypt in RAM & Download .vedvault Container

Click Encrypt File. The WebCrypto engine compiles the AES-256-GCM container in memory for immediate download.

Zero Data Leaks
4 Step 04

Decrypt Anytime in Any Browser

To restore, drop the .vedvault file into the Decrypt tab, enter your passphrase, and download the pristine original file.

Zero Data Leaks

Frequently Asked Questions (Sawal-Jawab)

Common questions and verified answers about Zero-Knowledge AES-256 File Encryption Vault

Can VedKit restore my file if I forget my password?
No. Because this is true Zero-Knowledge cryptography, no backdoor, recovery key, or master override exists. If you lose your password, the ciphertext cannot be decrypted by anyone in the world.
Is there any file size limit for in-browser encryption?
The engine processes files up to 100MB+ in memory smoothly across modern desktop and mobile browsers without memory exhaustion.
Can I safely send .vedvault files over email or WhatsApp?
Yes! The .vedvault container is fully encrypted with military-grade AES-256-GCM. You can safely store it on Google Drive, USB drives, or send it via email without anyone reading the contents.
Does file encryption upload data to any server?
Never. Open your browser Developer Tools (F12) Network panel: zero network packets are transmitted. The WebCrypto engine runs 100% locally on your device hardware.